A Indentation Cracking in Brittle Materials 525 8. A.1 Blunt Indenter 526 8. A.2 Sharp Indenter 526 Appendix 8. B Analysis of Failure Data Using the Weibull Distribution 532 8. This fully updated Second Edition provides the reader with the solid understanding of tribology which is essential to engineers involved in the design of, and ensuring the reliability of, machine parts and systems.